; RUN: llc -filetype=obj -o %t.o %s
; RUN: llc -filetype=obj %S/Inputs/weak-alias.ll -o %t2.o
; RUN: lld -flavor wasm --check-signatures %t.o %t2.o -o %t.wasm
; RUN: obj2yaml %t.wasm | FileCheck %s

; Test that weak aliases (alias_fn is a weak alias of direct_fn) are linked correctly

target triple = "wasm32-unknown-unknown-wasm"

declare i32 @alias_fn() local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define void @_start() local_unnamed_addr #1 {
entry:
  %call = tail call i32 @alias_fn() #2
  ret void
}

; CHECK:      --- !WASM
; CHECK-NEXT: FileHeader:
; CHECK-NEXT:   Version:         0x00000001
; CHECK-NEXT: Sections:
; CHECK-NEXT:   - Type:            TYPE
; CHECK-NEXT:     Signatures:
; CHECK-NEXT:       - Index:           0
; CHECK-NEXT:         ReturnType:      NORESULT
; CHECK-NEXT:         ParamTypes:
; CHECK-NEXT:       - Index:           1
; CHECK-NEXT:         ReturnType:      I32
; CHECK-NEXT:         ParamTypes:
; CHECK-NEXT:   - Type:            FUNCTION
; CHECK-NEXT:     FunctionTypes:   [ 0, 1, 1, 1, 1, 1, 0 ]
; CHECK-NEXT:   - Type:            TABLE
; CHECK-NEXT:     Tables:
; CHECK-NEXT:       - ElemType:        ANYFUNC
; CHECK-NEXT:         Limits:
; CHECK-NEXT:           Flags:           [ HAS_MAX ]
; CHECK-NEXT:           Initial:         0x00000002
; CHECK-NEXT:           Maximum:         0x00000002
; CHECK-NEXT:   - Type:            MEMORY
; CHECK-NEXT:     Memories:
; CHECK-NEXT:       - Initial:         0x00000002
; CHECK-NEXT:   - Type:            GLOBAL
; CHECK-NEXT:     Globals:
; CHECK-NEXT:       - Index:           0
; CHECK-NEXT:         Type:            I32
; CHECK-NEXT:         Mutable:         true
; CHECK-NEXT:         InitExpr:
; CHECK-NEXT:           Opcode:          I32_CONST
; CHECK-NEXT:           Value:           66560
; CHECK-NEXT:       - Index:           1
; CHECK-NEXT:         Type:            I32
; CHECK-NEXT:         Mutable:         false
; CHECK-NEXT:         InitExpr:
; CHECK-NEXT:           Opcode:          I32_CONST
; CHECK-NEXT:           Value:           66560
; CHECK-NEXT:       - Index:           2
; CHECK-NEXT:         Type:            I32
; CHECK-NEXT:         Mutable:         false
; CHECK-NEXT:         InitExpr:
; CHECK-NEXT:           Opcode:          I32_CONST
; CHECK-NEXT:           Value:           1024
; CHECK-NEXT:   - Type:            EXPORT
; CHECK-NEXT:     Exports:
; CHECK-NEXT:       - Name:            memory
; CHECK-NEXT:         Kind:            MEMORY
; CHECK-NEXT:         Index:           0
; CHECK-NEXT:       - Name:            _start
; CHECK-NEXT:         Kind:            FUNCTION
; CHECK-NEXT:         Index:           0
; CHECK-NEXT:       - Name:            alias_fn
; CHECK-NEXT:         Kind:            FUNCTION
; CHECK-NEXT:         Index:           1
; CHECK-NEXT:       - Name:            direct_fn
; CHECK-NEXT:         Kind:            FUNCTION
; CHECK-NEXT:         Index:           1
; CHECK-NEXT:       - Name:            call_direct
; CHECK-NEXT:         Kind:            FUNCTION
; CHECK-NEXT:         Index:           2
; CHECK-NEXT:       - Name:            call_alias
; CHECK-NEXT:         Kind:            FUNCTION
; CHECK-NEXT:         Index:           3
; CHECK-NEXT:       - Name:            call_alias_ptr
; CHECK-NEXT:         Kind:            FUNCTION
; CHECK-NEXT:         Index:           4
; CHECK-NEXT:       - Name:            call_direct_ptr
; CHECK-NEXT:         Kind:            FUNCTION
; CHECK-NEXT:         Index:           5
; CHECK-NEXT:       - Name:            __heap_base
; CHECK-NEXT:         Kind:            GLOBAL
; CHECK-NEXT:         Index:           1
; CHECK-NEXT:       - Name:            __data_end
; CHECK-NEXT:         Kind:            GLOBAL
; CHECK-NEXT:         Index:           2
; CHECK-NEXT:   - Type:            ELEM
; CHECK-NEXT:     Segments:
; CHECK-NEXT:       - Offset:
; CHECK-NEXT:           Opcode:          I32_CONST
; CHECK-NEXT:           Value:           1
; CHECK-NEXT:         Functions:       [ 1 ]
; CHECK-NEXT:   - Type:            CODE
; CHECK-NEXT:     Functions:
; CHECK-NEXT:       - Index:           0
; CHECK-NEXT:         Locals:
; CHECK-NEXT:         Body:            1081808080001A0B
; CHECK-NEXT:       - Index:           1
; CHECK-NEXT:         Locals:
; CHECK-NEXT:         Body:            41000B
; CHECK-NEXT:       - Index:           2
; CHECK-NEXT:         Locals:
; CHECK-NEXT:         Body:            1081808080000B
; CHECK-NEXT:       - Index:           3
; CHECK-NEXT:         Locals:
; CHECK-NEXT:         Body:            1081808080000B
; CHECK-NEXT:       - Index:           4
; CHECK-NEXT:         Locals:
; CHECK-NEXT:           - Type:            I32
; CHECK-NEXT:             Count:           2
; CHECK-NEXT:         Body:            23808080800041106B220024808080800020004181808080003602081081808080002101200041106A24808080800020010B
; CHECK-NEXT:       - Index:           5
; CHECK-NEXT:         Locals:
; CHECK-NEXT:           - Type:            I32
; CHECK-NEXT:             Count:           2
; CHECK-NEXT:         Body:            23808080800041106B220024808080800020004181808080003602081081808080002101200041106A24808080800020010B
; CHECK-NEXT:       - Index:           6
; CHECK-NEXT:         Locals:
; CHECK-NEXT:         Body:            0B
; CHECK-NEXT:   - Type:            CUSTOM
; CHECK-NEXT:     Name:            linking
; CHECK-NEXT:     DataSize:        0
; CHECK-NEXT:   - Type:            CUSTOM
; CHECK-NEXT:     Name:            name
; CHECK-NEXT:     FunctionNames:
; CHECK-NEXT:       - Index:           0
; CHECK-NEXT:         Name:            _start
; CHECK-NEXT:       - Index:           1
; CHECK-NEXT:         Name:            direct_fn
; CHECK-NEXT:       - Index:           2
; CHECK-NEXT:         Name:            call_direct
; CHECK-NEXT:       - Index:           3
; CHECK-NEXT:         Name:            call_alias
; CHECK-NEXT:       - Index:           4
; CHECK-NEXT:         Name:            call_alias_ptr
; CHECK-NEXT:       - Index:           5
; CHECK-NEXT:         Name:            call_direct_ptr
; CHECK-NEXT:       - Index:           6
; CHECK-NEXT:         Name:            __wasm_call_ctors
; CHECK-NEXT: ...

; RUN: lld -flavor wasm --check-signatures --relocatable %t.o %t2.o -o %t.reloc.o
; RUN: obj2yaml %t.reloc.o | FileCheck %s -check-prefix=RELOC

; RELOC:      --- !WASM
; RELOC-NEXT: FileHeader:
; RELOC-NEXT:   Version:         0x00000001
; RELOC-NEXT: Sections:
; RELOC-NEXT:   - Type:            TYPE
; RELOC-NEXT:     Signatures:
; RELOC-NEXT:       - Index:           0
; RELOC-NEXT:         ReturnType:      NORESULT
; RELOC-NEXT:         ParamTypes:
; RELOC-NEXT:       - Index:           1
; RELOC-NEXT:         ReturnType:      I32
; RELOC-NEXT:         ParamTypes:
; RELOC-NEXT:   - Type:            IMPORT
; RELOC-NEXT:     Imports:
; RELOC-NEXT:       - Module:          env
; RELOC-NEXT:         Field:           __stack_pointer
; RELOC-NEXT:         Kind:            GLOBAL
; RELOC-NEXT:         GlobalType:      I32
; RELOC-NEXT:         GlobalMutable:   false
; RELOC-NEXT:   - Type:            FUNCTION
; RELOC-NEXT:     FunctionTypes:   [ 0, 1, 1, 1, 1, 1 ]
; RELOC-NEXT:   - Type:            TABLE
; RELOC-NEXT:     Tables:
; RELOC-NEXT:       - ElemType:        ANYFUNC
; RELOC-NEXT:         Limits:
; RELOC-NEXT:           Flags:           [ HAS_MAX ]
; RELOC-NEXT:           Initial:         0x00000002
; RELOC-NEXT:           Maximum:         0x00000002
; RELOC-NEXT:   - Type:            MEMORY
; RELOC-NEXT:     Memories:
; RELOC-NEXT:       - Initial:         0x00000000
; RELOC-NEXT:   - Type:            EXPORT
; RELOC-NEXT:     Exports:
; RELOC-NEXT:       - Name:            _start
; RELOC-NEXT:         Kind:            FUNCTION
; RELOC-NEXT:         Index:           0
; RELOC-NEXT:       - Name:            alias_fn
; RELOC-NEXT:         Kind:            FUNCTION
; RELOC-NEXT:         Index:           1
; RELOC-NEXT:       - Name:            direct_fn
; RELOC-NEXT:         Kind:            FUNCTION
; RELOC-NEXT:         Index:           1
; RELOC-NEXT:       - Name:            call_direct
; RELOC-NEXT:         Kind:            FUNCTION
; RELOC-NEXT:         Index:           2
; RELOC-NEXT:       - Name:            call_alias
; RELOC-NEXT:         Kind:            FUNCTION
; RELOC-NEXT:         Index:           3
; RELOC-NEXT:       - Name:            call_alias_ptr
; RELOC-NEXT:         Kind:            FUNCTION
; RELOC-NEXT:         Index:           4
; RELOC-NEXT:       - Name:            call_direct_ptr
; RELOC-NEXT:         Kind:            FUNCTION
; RELOC-NEXT:         Index:           5
; RELOC-NEXT:   - Type:            ELEM
; RELOC-NEXT:     Segments:
; RELOC-NEXT:       - Offset:
; RELOC-NEXT:           Opcode:          I32_CONST
; RELOC-NEXT:           Value:           1
; RELOC-NEXT:         Functions:       [ 1 ]
; RELOC-NEXT:   - Type:            CODE
; RELOC-NEXT:     Relocations:
; RELOC-NEXT:       - Type:            R_WEBASSEMBLY_FUNCTION_INDEX_LEB
; RELOC-NEXT:         Index:           1
; RELOC-NEXT:         Offset:          0x00000004
; RELOC-NEXT:       - Type:            R_WEBASSEMBLY_FUNCTION_INDEX_LEB
; RELOC-NEXT:         Index:           1
; RELOC-NEXT:         Offset:          0x00000013
; RELOC-NEXT:       - Type:            R_WEBASSEMBLY_FUNCTION_INDEX_LEB
; RELOC-NEXT:         Index:           1
; RELOC-NEXT:         Offset:          0x0000001C
; RELOC-NEXT:       - Type:            R_WEBASSEMBLY_GLOBAL_INDEX_LEB
; RELOC-NEXT:         Index:           0
; RELOC-NEXT:         Offset:          0x00000027
; RELOC-NEXT:       - Type:            R_WEBASSEMBLY_GLOBAL_INDEX_LEB
; RELOC-NEXT:         Index:           0
; RELOC-NEXT:         Offset:          0x00000032
; RELOC-NEXT:       - Type:            R_WEBASSEMBLY_TABLE_INDEX_SLEB
; RELOC-NEXT:         Index:           1
; RELOC-NEXT:         Offset:          0x0000003A
; RELOC-NEXT:       - Type:            R_WEBASSEMBLY_FUNCTION_INDEX_LEB
; RELOC-NEXT:         Index:           1
; RELOC-NEXT:         Offset:          0x00000043
; RELOC-NEXT:       - Type:            R_WEBASSEMBLY_GLOBAL_INDEX_LEB
; RELOC-NEXT:         Index:           0
; RELOC-NEXT:         Offset:          0x00000050
; RELOC-NEXT:       - Type:            R_WEBASSEMBLY_GLOBAL_INDEX_LEB
; RELOC-NEXT:         Index:           0
; RELOC-NEXT:         Offset:          0x0000005D
; RELOC-NEXT:       - Type:            R_WEBASSEMBLY_GLOBAL_INDEX_LEB
; RELOC-NEXT:         Index:           0
; RELOC-NEXT:         Offset:          0x00000068
; RELOC-NEXT:       - Type:            R_WEBASSEMBLY_TABLE_INDEX_SLEB
; RELOC-NEXT:         Index:           1
; RELOC-NEXT:         Offset:          0x00000070
; RELOC-NEXT:       - Type:            R_WEBASSEMBLY_FUNCTION_INDEX_LEB
; RELOC-NEXT:         Index:           1
; RELOC-NEXT:         Offset:          0x00000079
; RELOC-NEXT:       - Type:            R_WEBASSEMBLY_GLOBAL_INDEX_LEB
; RELOC-NEXT:         Index:           0
; RELOC-NEXT:         Offset:          0x00000086
; RELOC-NEXT:     Functions:
; RELOC-NEXT:       - Index:           0
; RELOC-NEXT:         Locals:
; RELOC-NEXT:         Body:            1081808080001A0B
; RELOC-NEXT:       - Index:           1
; RELOC-NEXT:         Locals:
; RELOC-NEXT:         Body:            41000B
; RELOC-NEXT:       - Index:           2
; RELOC-NEXT:         Locals:
; RELOC-NEXT:         Body:            1081808080000B
; RELOC-NEXT:       - Index:           3
; RELOC-NEXT:         Locals:
; RELOC-NEXT:         Body:            1081808080000B
; RELOC-NEXT:       - Index:           4
; RELOC-NEXT:         Locals:
; RELOC-NEXT:           - Type:            I32
; RELOC-NEXT:             Count:           2
; RELOC-NEXT:         Body:            23808080800041106B220024808080800020004181808080003602081081808080002101200041106A24808080800020010B
; RELOC-NEXT:       - Index:           5
; RELOC-NEXT:         Locals:
; RELOC-NEXT:           - Type:            I32
; RELOC-NEXT:             Count:           2
; RELOC-NEXT:         Body:            23808080800041106B220024808080800020004181808080003602081081808080002101200041106A24808080800020010B
; RELOC-NEXT:   - Type:            CUSTOM
; RELOC-NEXT:     Name:            linking
; RELOC-NEXT:     DataSize:        0
; RELOC-NEXT:     SymbolInfo:
; RELOC-NEXT:       - Name:            alias_fn
; RELOC-NEXT:         Flags:           [ BINDING_WEAK ]
; RELOC-NEXT:   - Type:            CUSTOM
; RELOC-NEXT:     Name:            name
; RELOC-NEXT:     FunctionNames:
; RELOC-NEXT:       - Index:           0
; RELOC-NEXT:         Name:            _start
; RELOC-NEXT:       - Index:           1
; RELOC-NEXT:         Name:            direct_fn
; RELOC-NEXT:       - Index:           2
; RELOC-NEXT:         Name:            call_direct
; RELOC-NEXT:       - Index:           3
; RELOC-NEXT:         Name:            call_alias
; RELOC-NEXT:       - Index:           4
; RELOC-NEXT:         Name:            call_alias_ptr
; RELOC-NEXT:       - Index:           5
; RELOC-NEXT:         Name:            call_direct_ptr
; RELOC-NEXT: ...
